1.16.5, 21w06a, 21w07a, 21w11a
This is identical to
MC-68497, it says it's fixed, but it isn't
1. Copy something
2. Paste it.
3. Without having selected any text, try and copy something
-> Nothing is pasted (it copied an empty field of text)
MC-68497 Cut/Copy function updates clipboard even if nothing is selected